Used as a key intermediate in the synthesis of anticoagulant drugs, particularly in the production of novel vitamin K antagonists. It serves as a building block for structurally modified coumarin derivatives, which are explored for improved blood-thinning properties with reduced side effects. Also employed in research for developing new anti-thrombotic agents with better pharmacokinetic profiles. Its functional groups allow for easy derivatization, making it valuable in medicinal chemistry for structure-activity relationship studies.